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  <title>Document</title>
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<body>
  <!-- 
    rowspan：指定要跨的行数。
    colspan：指定要跨的列数。
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  <table border="1" cellspacing="0">
    <caption>课程表</caption>
    <thead>
      <tr>
        <th>项目</th>
        <th colspan="5">上课</th>
        <th colspan="2">活动与休息</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>星期</td>
        <td>星期一</td>
        <td>星期二</td>
        <td>星期三</td>
        <td>星期四</td>
        <td>星期五</td>
        <td>星期六</td>
        <td>星期日</td>
      </tr>
      <tr>
        <td rowspan="4">上午</td>
        <td>3-2</td>
        <td>3-3</td>
        <td>3-4</td>
        <td>3-5</td>
        <td>3-6</td>
        <td>3-7</td>
        <td rowspan="4">休息</td>
      </tr>
      <tr>
        <td>4-2</td>
        <td>4-3</td>
        <td>4-4</td>
        <td>4-5</td>
        <td>4-6</td>
        <td>4-7</td>
      </tr>
      <tr>
        <td>5-2</td>
        <td>5-3</td>
        <td>5-4</td>
        <td>5-5</td>
        <td>5-6</td>
        <td>5-7</td>
      </tr>
      <tr>
        <td>6-2</td>
        <td>6-3</td>
        <td>6-4</td>
        <td>6-5</td>
        <td>6-6</td>
        <td>6-7</td>
      </tr>
      <tr>
        <td rowspan="2">下午</td>
        <td>7-2</td>
        <td>7-3</td>
        <td>7-4</td>
        <td>7-5</td>
        <td>7-6</td>
        <td>7-7</td>
        <td rowspan="2">休息</td>
      </tr>
      <tr>
        <td>8-2</td>
        <td>8-3</td>
        <td>8-4</td>
        <td>8-5</td>
        <td>8-6</td>
        <td>8-7</td>
      </tr>
    </tbody>
  </table>
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